1982169546 has 64 divisors (see below), whose sum is σ = 4766515200. Its totient is φ = 537518016.

The previous prime is 1982169533. The next prime is 1982169557. The reversal of 1982169546 is 6459612891.

It is a super-2 number, since 2×1982169546² = 7857992218179692232, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58071 + ... + 85653.

It is an arithmetic number, because the mean of its divisors is an integer number (74476800).

Almost surely, 2^1982169546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1982169546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2383257600).

1982169546 is an abundant number, since it is smaller than the sum of its proper divisors (2784345654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1982169546 is a wasteful number, since it uses less digits than its factorization.

1982169546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27683.

The product of its digits is 933120, while the sum is 51.

The square root of 1982169546 is about 44521.5627084225. The cubic root of 1982169546 is about 1256.1657070542.

The spelling of 1982169546 in words is "one billion, nine hundred eighty-two million, one hundred sixty-nine thousand, five hundred forty-six".